divide 32 into four parts which are in A.P.such that the ratio of product of extremes to the product of means is 7:15.?
solve every step please
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answer is 8..................
take a. p. as a-b, a, a+b,a+2b and solve
take a. p. as a-b, a, a+b,a+2b and solve
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Given (a - 2d) + (a -d) + (a + d) +(a + d) = 32
4a = 32
Hence, a = 8
Given (a - 3d)(a + 3d)/(a - d)(a + d) = 7/15
15(a2 - 9d2) = 7(a2 - d2)
128d2 = 8a2
= 8 x 64
d2 = 4
Therefore, d = ± 2